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arXiv · 1609.04320

Anomalous effect of turning off long-range mobility interactions in Stokesian Dynamics

Adam K. Townsend·Helen J. Wilson
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Abstract

In Stokesian Dynamics, particles are assumed to interact in two ways: through long-range mobility interactions and through short-range lubrication interactions. To speed up computations, in shear-driven concentrated suspensions, often found in rheometric contexts, it is common to consider only lubrication. We show that, although this approximation may provide acceptable results in shear-driven, periodic suspensions, for bidisperse suspensions where the particles are exposed to an external force, it can produce physically unreasonable results. We suggest that this problem could be mitigated by a careful choice of particle pairs on which lubrication interactions should be included.

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Adam K. Townsend, Helen J. Wilson. 2016-09-14. Anomalous effect of turning off long-range mobility interactions in Stokesian Dynamics. https://arxiv.org/abs/1609.04320

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